Thermotropic Systems: Biaxial Nematic Polymers

2015 ◽  
pp. 319-331
Author(s):  
Anke Hoffmann ◽  
Felicitas Brömmel ◽  
Heino Finkelmann
Keyword(s):  
Nematic Polymers ◽  
Biaxial Nematic

Real-space renormalization-group treatment of the Maier-Saupe-Zwanzig model for biaxial nematic structures

2021 ◽  
Vol 103 (3) ◽  
Author(s):  
Cícero T. G. dos Santos ◽  
André P. Vieira ◽  
Silvio R. Salinas ◽  
Roberto F. S. Andrade
Keyword(s):  
Renormalization Group ◽  
Group Treatment ◽  
Real Space ◽  
Real Space Renormalization Group ◽  
Biaxial Nematic

Elastic constant anisotropy and disclination interaction in nematic polymers II. Effect of disclination interaction

2003 ◽  
Vol 30 (7) ◽  
pp. 775-784 ◽  
Author(s):  
Wenhui Song ◽  
Houjie Tu ◽  
Gerhard Goldbeck-wood ◽  
Alan H Windle
Keyword(s):  
Elastic Constant ◽  
Nematic Polymers

Thermotropic Chiral Nematic Polymers as Optical Materials

1989 ◽  
Vol 175 ◽  
Author(s):  
S.H. Chen ◽  
M.L. Tsai ◽  
S.D. Jacobs
Keyword(s):  
Optical Materials ◽  
Helical Structure ◽  
Structural Features ◽  
Optically Active ◽  
Structure Property ◽  
Chiral Compound ◽  
Structure Property Relationships ◽  
Chiral Nematic ◽  
Chiral Structures ◽  
Nematic Polymers

AbstractChiral nematic copolymers based on optically active cholesterol, dihydrocholesterol, (R)-(+)- and (S)-(−)-1-phenylethylamine, and (+)- and (−)- isopinocampheol were synthesized and characterized for the investigations of thermotropic and optical properties. Although helical sense does not appear to correlate with the sign of [α]D of the precursor chiral compound as suggested by the observations of cholesteryl and dihydrocholesteryl copolymers, the inversion of chirality in the pendant group, (R)-(+)- vs (S)-(−)-1-phenylethylamine, does lead to the opposite handedness in the resultant helical structure. To better understand the structure-property relationships involving helical sense and twisting power, systematic studies of the roles played by both nematogenic and chiral structures as well as other structural features of the comonomers should be conducted.

An analogy between biaxial crystal and biaxial nematic lyotropic phase

2010 ◽  
Vol 156 (2-3) ◽  
pp. 184-186 ◽  
Author(s):  
G.P. Souza ◽  
D.A. Oliveira ◽  
D.D. Luders ◽  
N.M. Kimura ◽  
M. Simões ◽  
...  
Keyword(s):  
Biaxial Crystal ◽  
Biaxial Nematic

Rod to coil transitions in nematic polymers

1985 ◽  
Vol 18 (15) ◽  
pp. 3007-3026 ◽  
Author(s):  
M Warner ◽  
J M F Gunn ◽  
A B Baumgartner
Keyword(s):  
Nematic Polymers
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